The usb_mid driver is a USBA (Solaris Universal Serial Bus Architecture) compliant nexus driver that binds to device level nodes of a composite (multi interface) device if no vendor or class specific driver is available. The usb_mid driver attempts to bind drivers to each of the composite device's interfaces.

/kernel/drv/usb_mid

32-bit ELF kernel module

/kernel/drv/sparcv9/usb_mid

64-bit ELF kernel module

See attributes(5) for descriptions of the following attributes:

cfgadm_usb(1M), attributes(5), usba(7D)

Writing Device Drivers

Universal Serial Bus Specification 1.0 and 1.1

System Administration Guide: Basic Administration

http://www.sun.com/io

In addition to being logged, the following messages may appear on the system console. All messages are formatted in the following manner:

Warning: <device path> (usb_mid<instance number>): Error Message...

Cannot access device. Please reconnect <device name>.

This device has been disconnected because a device other than the original one has been inserted. The driver informs you of this fact by displaying the name of the original device.

Device not identical to the previous one on this port. Please disconnect and reconnect.

Same condition as described above; however in this case, the driver is unable to identify the original device with a name string.